George neilson



encuen Nansen, or n'oSTo N, MASSACHUSETTS. Letters Patent No. 72,219, dated December 17, 1867A,

IlVIlROlTI-lMENT` IN LAMPS.

,'IO WHOM'IT MAY CONOERN:

Be it known that I, GEORGE NEILSON, of Boston, in the county of Su'olk, andvState of h/Iassachusetts,` have invented certain new and useful 'Improvements in Lamp-Burners; and I hereby declare the following to be :L -full, clear, and enact description oi' the same, refcrencebeing had to the accompanying drawings, in

which- Figure 1 represents an elevation,

Figure 2 a vertical central section, and

Figure 3 a plan view of a burner constructed in accordance with my invention'.

,My invention relates to that class of burners for hydrocarbon` iiuids, in which the open dome or defiector i is elevated some distance above the base of the burner, so as to allow the llight to pass out from above and below said detlector, and so asto prevent the lo'wer part of the chimney, which extends outside of and below the dome, from becoming' heated. l.

My invention consists principally of, first, the combination with an annular diskVV or plate, elevated upon suitable supports, -so as to encircle the upper part ot' the 'wick-tube, of a deflector or dome, hinged to said plate, in the manner hereinafter described; second, the combination, with the annular domefsupporting plate, of a ring of leather, or` other non-conductor of heat, secured upon the'periphery of such plate, so as to prevent the heat of the dome or plate from being communicated tothe chimney which encireles and is supported by said v plate; third, a base or chimney-rest, having a frusta-conical shape, and provided with a series of radial corrugations, which, whenlthe chimney is in place, constitute the air-spaces through'whieh the enternal air passes into the interior ot' the burner; fourth, thev combination of the hinged dome and its annular supporting-plate with the radially corrugated base or chimney-rest.

.Io enable those skilled in the art to understand and use my invention, I will new proceed to describe the manncr in which the same is orimay be carried into ell`ect,by reference to the accompanying drawings.

The cylindrical lower part a of the burner, which receives and supports the wick-tube, is of ordinary or i suitable construction. Around tlxe-uppc.rend of the pai-t a is secured a metal plate, b, of frusto-conical shape,

as shown in iig. 2, having formed in it a series of radial corrugations, c., This plate forms the base or rest for' the chimney, as will he hereinafter explained. The wick-tube d extends up some distance above therbase. b,...

as is usual in this species of burner, and over its upper end is placed the dome or delector f. The deflecter rests on an annular disk, h, which is supported in position above the base b, by means of wires,or other suite able supports, z', whose lower ends are soldered or otherwise suitably attached tothe base. Under this arrangement the space between the disk and base is entirely open, allowing the external air to circulate freely between them.

The cone or deector is of ordinary construction, being provided with the usual perforations, k, te allow the necessary supply ofv air to pass into that part of the chimney above the deliector. InA order, however,to secure the cone in proper position upon its supporting-disk, and at the same time to'admit of its being removed or turned baclc, so as to uncover the wick-tube, I provide the dome, at any point-upon the periphery of its base, with a short arm, Z, which projects downwards at about right angles to thc base, and passes through a slot, m, of suitable size, formed for its reception in the disk h. There is thus a. hinge-joint formed, which admits of the cone being turned baclt from the 'wick-tube whenever occasion requires. The position ofthe arm Z, when the cone is over the tube, isshown in fig. 2, and in black lines, fig. I. When it is desired to uncover the wick-tube, the cone islifted or tilted back, until it assumes the position shown in red lines, iig. 1. The arm I now rests against the under side of the disk lt, and prevents the cone from being swung further back.

It will also be noticed that the nature of the joint admits of the dome being lifted away from the disk whenever desired, the arm slipping easily out of the slot m. The chimney n is of such size as to it over or around the disk h, and when placed in proper position on the burner, its lower end rests on or is supported by the corrugated base or chimney-rest Ii, as shown in the drawings. In order to keep the chimney from contact with the cone-supporting disk, as well as to support and steadyit, I attach upon the periphery of the-disk a. ring or strip of leather, p, or other suitable non-conductor of heat. vented from communicating heat to the chimney, thus keeping the lower part oi the chimney much cooler than By this means the disk and cone are pre-- in ordinary burners of this kind. The ring can be made of rubber, cloth, or any other suitable material, and its flexible or yielding nature admits of its conforming to the shape of the chimney so as to hold the latter firmly in place. It may be attached to the disk by any ordinary or suitable means. I prefer, however, the method shown in the drawings; slits being made in the edge of the disk, so as to form a series of arms, s( The leather ring;` is held by these arms, passing above and 'below the arms alternately, ns shown plainly in the drawings.

While preferring to connect'the dome and its disk inthe manner aboveV explained, it will, of course, be evident that any ordinary or suitable hinge-joint or connection may be used for the saine purpose, though not with equally goed results, and I therefore do not limit myself to the precise joint herein described, but contemplate employing any ether suitable hinge connection. When the chimney is in the position indicated in red lines, iig. Il, the external air isl free to pass under its base through the openings formed by the corrugations in the chimneyrest b. This continuous current of air tends, of course, to reduceV the heat of the lower part ofthe chimney, and as by means ofthe non-conductintf3f ringp thc cone and disk are prevented from eommunicatin,r their heat to the chimney, the lon'oi,` part of the chimney is kept cool and almost entirely free from heat. There is, therefore, little or no liability of th' chimney being broken or cracked by the heat, a defect which is noticeable in all burners of this hind heretofore made.

Having now described my invention, and the manner in which the same is or may be carried into eilect, what I claim, and desire to secure by Letters Patent, is-4 I 1. The combination, in a burner .such as described, with the elevated dome-supporting disk, of a dome or deflector, hinged to said disk, substantially as and for the purposes set forth. i

2. The combination, with the dome or defleetor and thc arm projecting fromits bnseo'f the dome-supporting disk, and slot formed in the same for receiving and holding said arm, substantially in themanner and forthe purposes set forth. Y

3. The combination, with the dome-supporting disk, of n, ring of leather or other suitable material, which is a non-conductor of heut, secured upon thelpcrphery ofsaid disk, substantially as andfor the purposes set forth. i

4. The base or chimney-rest, constructed substantially as herein described, thats to say, provided with a series of radial corrugations, which, 1hen the chimney is in place, allow thecxternal nir to pass into theV burner between the base of the chimney and the said rest, substantially as set forth.

5.V The combination of the radially corrugated buse or ehimncy-rest, with the dome-supporting disk, and dome or dcflcctor hinged to said dish, under the arrangement and for operation as set forth.

In testimony"whereef, I have signed my name to this specication before two subscribing,r witnesses.

GEORGE Nnntsonr Witnesses: A

L. S. CnAGIN, Jr., AARON E. lannnn.` 

